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A motorcycle has a constant acceleration of 4.93 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time is required for the motorcycle to change its speed from (a) 32.7 to 42.7 m/s, and (b) 62.7 to 72.7 m/s?
Biologically usefull technetium nucleuii (at wt 99) have half life of 6 hours. A solution containing 10^-12 gram of this is injected into the bladder of a patient.
In1960 a Tampa, Florida, mother reportedly raised one end of a carthat had fallen onto her son when jack failed. how much work did her force do on the car
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 4.60rad/s and? = 0.795rad/s3, Calculate the angular acceleration as a function of time
A machinist turns the power on to a grinding wheel, at rest, at time t = 0 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 83 rad/s. The wheel is run at that angular velocity for 29 s and then power is shu..
An explosion breaks an object into two pieces, one of which has 1.5 times the mass of the other. how much kinetic energy did each piece acquire
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 575 kg. estimate the kinetic energy stored in the flywheel
A dentist's drill starts from rest. After 3.5 seconds ofconstant angular acceleration, it turns at a rate of 2.51x10^4rev/min. Find the drill's angular acceleration
Determined to test the law of gravity for himself, a student walks off a skyscraper 180 m high, stopwatch in hand, and starts his free fall (zero initial velocity).
A parallel-plate capacitor has plates of area A and separation d and is charged to a potential difference, find The inital and final stored energy
The induced emf is a single loop of wire has a magnitude of 2.36 Vwhen the magnetic flux is changed from 0.912 T X m2 to0.233 T X m2. How much time is required for this changein flux?
Consider an aircraft powered by a turbojet engine that has a pressure ratio of 12. The aircraft is stationary on the ground, held in position by its brakes. determine the force that must be applied on the brakes to hold the plane stationary
A crate of mass 9.0 kg is pulled up a rough incline with an initial speed of 1.42 m/s. What is the change in kinetic energy of the crate
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